package com.Amall.mall.security.util;


import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;


@Component
public class SpringUtil implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    // 获取applicationContext
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (SpringUtil.applicationContext == null)  {
            SpringUtil.applicationContext = applicationContext;
        }
    }
    //通过name获取 Bean
    public static Object getBean(String name){
        return getApplicationContext().getBean(name);
    }

    //通过class获取Bean
    public static <T> T getBean(Class<T> clazz){
        return getApplicationContext().getBean(clazz);
    }
}
